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Two versions of python on linux. how to make 2.7 the default

..., or put it in your ~/.bashrc if you want the change to be persistent, and now when you type python it runs your chosen 2.7, but when some program on your system tries to run a script with /usr/bin/env python it runs the standard 2.6. Alternatively, just create a virtual environment out of your 2...
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How to assign the output of a command to a Makefile variable

...converts my tab into a number of spaces. You, frustrated internet citizen, now copy this, thinking that you now have the same text that I used. The make command, now reads the spaces and finds that the "all" command is incorrectly formatted. So copy the above text, paste it, and then convert the whi...
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UITableViewCell Separator disappearing in iOS7

...s not shown! I overrode layoutSubviews in my UITableViewCell subclass and now the separators are displayed reliably: Objective-C: - (void)layoutSubviews { [super layoutSubviews]; for (UIView *subview in self.contentView.superview.subviews) { if ([NSStringFromClass(subview.class) ...
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Connection pooling options with JDBC: DBCP vs C3P0

...a shelf, the Apache Commons folk have taken DBCP out of dormancy and it is now, once again, an actively developed project. Thus my original post may be out of date. That being said, I haven't yet experienced this new upgraded library's performance, nor heard of it being de-facto in any recent app ...
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C++ Build Systems - What to use? [closed]

... You can use Gradle now: https://docs.gradle.org/current/userguide/native_software.html This seems to have matured quite a bit in the years since I originally posted this. The page saying that the project is "incubating" has disappeared, but I ...
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How to make a class property? [duplicate]

... type_ = type(obj) # return self.fset.__get__(obj, type_)(value) Now all will be fine. share | improve this answer | follow | ...
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Javascript library for human-friendly relative date formatting [closed]

... Since I wrote this answer, a well known library available is moment.js. There are libraries available, but it is trivial to implement it yourself. Just use a handful of conditions. Assume date is an instantiated Date object for the time you want to make a ...
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Remote debugging with Android emulator

...k configuration above, open Putty, go to Connection > SSH > Tunnels. Now add an entry with Source-port: 5556 and Destination: localhost:5554. Repeat the same with Source-port: 5557 and Destination: localhost:5555. Cheers! – gsbabil Jul 30 '13 at 16:54 ...
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How do I preview emails in Rails?

... Action Mailer now has a built in way of previewing emails in Rails 4.1. For example, check this out: # located in test/mailers/previews/notifier_mailer_preview.rb class NotifierPreview < ActionMailer::Preview # Accessible from http:...
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How connect Postgres to localhost server using pgAdmin on Ubuntu?

...-u postgres psql postgres alter user postgres with password 'postgres'; Now connect to pgadmin using username postgres and password postgres Now you can create roles & databases using pgAdmin How to change PostgreSQL user password? ...